Answer:
90 Years = 47,304,000 Minutes = 47304000 Minutes. 
Step-by-step explanation:
 
        
             
        
        
        
7.43: Let  denote the random variable for height and
 denote the random variable for height and  for the sample mean. Then if
 for the sample mean. Then if  is the mean of
 is the mean of 
So the probability that the difference between the sample and population means does not exceed 0.5 inch is

per the empirical or 68/95/99.7 rule.
7.44: For a sample of size <em>n</em>, the sample standard deviation would be  . We want to find <em>n</em> such that
. We want to find <em>n</em> such that

Comparing to the equation from the previous part, this means we would need

so a sample of at least 157 men would be sufficient.
 
        
             
        
        
        
Answer:

Step-by-step explanation:
The given expression is:

We expand the parenthesis using the distributive property to obtain;

Recall that;

We apply this property and multiply out the constant terms to obtain;

 
        
             
        
        
        
Step-by-step explanation:
It is not a solution because the point falls outside the shaded region, if you were to plugin the point it would return a false statement